Syringe attachment clamp



Jan. 19, 1932. N, KRUEGER 1,842,352

SYRINGE ATTACHMENT CLAMP Filed Jap. 29, 1929 INVENTOR NICHOLAS KRUEGER ATTOR N EY Patented Jan. 19,1932

UNITED STATES PATENT OFFICE NIoHonAs XRUEGEB, or ,EAST yrtUTHnnronn,e` NEW JERSEY, AssIefNon To nAsT RUTHERFORD .SYRINGE oo., 11g-(ips EAST RUTHERFORD, Nrw'` JERsnmA couronn- "TION OF NEW JERSEY f sYmNGE `ATinenivinivT `ener/rrV Application sied January 29, 1929, serial 1110.335577.

The present invention relates to syringes of the hypodermic type and embodies, more particularly, an improved` hypodermic syr inge capablel of use with-needles and other l 5 tools having varyingsizeldbases In ;)ractice,"it`f is desirablein hypodermio work to `useneedlesand other attachments l of varying sizes for a given sizeof `syringe and` in existingeconstructions, no simple and 10 effective devices are available forinterchang` i @o ing sizes, the tools being selectively 4applied tothe syringe with equal facility. l A

l further object of thevi "vention isto af-l ford a means for locking the tool tothe sy`r` inge in such manner that a predetermined relationship bet-ween portionsof thetool `and the syringe'may be maintained when securing the toolto the barrel of the syringe.

f The "attainment of the above objects is" ac` complished by "the provision of an adapter 30 upon the barrel of the syringelwhich has a fitting to receive the baseiof theneedles or other tools, the fitting being of such character that the needles and tools arev fitted-with equaldegrees of nicetygregardless of their sizes. Cooperating with this fitting isa man ually operable retaining member which holds the needle'orftoolin operative relation to ,thettingl `ing means whenwthe Further objects of the inventiomnot spe? cifically enumerated above,w1ll appear as the ingthe specific manner in which the needle is secured to the barrel of the syringe.

F1gure 3 1s a view similar to Figure 2,

showing the syringe carrying a catheter or l curved nozzle,` l l Y N Flgurelt 1s a perspective view showing the manually operable means for `securing the needle orrtool to theladapter. n F1gure 5 1s a perspective view showing the adapterwhich is carried by the syringe bar-` i e rel, and uponlwlnch the needles or tools are secured.` Incidentally, this view, taken with which it assumes with respect to the `retainlatter is applied thereto during assembly. i i Y l 1 n i Figure 6 is a view in side'zelevation of the adapter in loose position ready toreceive a needle. 1 i

` At the outset, it will invention primarilyembodies a connection for securing one` element to another, although. it has been illustrated as a means for securing a needle or other tool to the barrel-of a syr inge. i l ith a view tosettingforth theinvention specifically, reference will now be had'par` beunderstood that `the "Figure 4, shows the adapter `inthe position Y ticularly to Figures 1, 2, t and 5 whereinrl() designates the barrel of a syringe having'` aplunger 11 and a scale 12 for indicating a Adesired volumeof fluid to be injected. At the i end of the barrel .opposite from the'plunger,1a barrel tip 13 may be formed, having an aperL ture 14 through which fluid `may flow. Y

An adapter orcoupling 15 having a recess 16 is ittedfuponithe barrel, thetip of 9 the latter beinglsnugly receivedin the recessl.

An axial passage 1751s formed in the adapter;

preferably in alignment with theaperture 14 female member 23,1vithin which the nozzle ,i or male member 18 is received.` An annular Y (iii bead 2li is formed on the needle base and cooperates with a retaining means to be described hereinafter, to secure the needle to the adapter.

Cooperating with the adapter to hold the needle, is a thimble or bushing 25, threaded internally at 26 to engage the threads 19, and. knurled on its external periphery, as at 27, to facilitate manual operation.` Coaxial with the bushing is a semi-cyclindrical extension 2S having an inwardly extending gripping flange 29. The extension and flange overlie the nozzle 18 as clearly shown in Figure 2. A coaxial apron 30 serves as a keeper and is pressed or otherwise secured to the bushing. An inwardly extending rim 3l on the apron engages the threaded portion of the adapter to prevent the bushing from being` entirely removed when unscrewed from thevadapter.

In Figure 3 the needle is replaced by catheter or curved nozzle 32 having an end fitting 33 similar to the base of the needle 20. Obviously, the manner of securing this fitting to the nozzle is similar to that in which the needle base is Secured to the nozzle in the construction shown in Figures l and 2.

From the foregoing description it will be apparent that the adapter is snuglyv held on the barrel tip and carries the thimble or Vbush ing with the gripping flange'QQ. To apply a needle or other tool to the nozzle, the thimble 25 is advanced toward the end of the nozzle. lhen there is suiicient clearance between the gripping flange and the tapering` -side of the nozzle to receive the bead 24 of the needle base or fitting 33, the needle or tool is slipped over the nozzle and the thimble backed up until the gripping flange 29 thereon engages the bead 24 and securely fits the needle or tool upon the nozzlev The reverse operation is effected when the needle or tool is to be removed. i

`In applying the needle to the syringe, it willbe Vapparent that it is but a simple matter to hold the needle in any position desired, since it need only partake of axial movement during such operation. In this manner the needle is easily held so that its opening will be facing in the same direction as the scale on the barrel of the syringe, thus enabling the instrument to be used more effectively.

From the description as outlined above, it will be apparent that the invent-ion is not restricted to the specific construction'embodied herein, but may be utilized with couplings of many formsand it is not to be limited save as defined in the appended claims.

l. A syringe provided at one end of its barrel with a tip, an adapter for securing a tool in rotatably adjusted position on the barrel, said adapter comprising a male member provided with external threads and formed with a recess at one end for receiving the barrel` tipv and at its opposite end with a tapered nozzle adapted to be inserted into the socket recess of the base of a tool, a thimble internally threaded for engagement with the threads of the adapter and provided with a flange overlying the tapered nozzle for engaging the usual bead on the base of the tool to draw the same axially into engagement with the nozzle, and an apron on the thimble having an inwardly extending flange to engage the threadsV on the adapter to limit the movement of the thimble toward the nozzle. Y

2. A syringe provided at one end of its barrel with a tip, an adapter for securing` a tool in rotatably adjusted position on the barrel, said adapter comprising a male mem ber provided with external threads and formed with a recess at one end for receiving the barrel tip and at itsopposite end with a nozzle adapted to be inserted into the socket recess of the base of a tool, and a thimble internally threaded for engagement with the threads of the adapter and provided at one end with a flange for engaging the usual bead on the base of the tool to draw the same axially into engagement with the nozzlefand provided at the other end with a rim adapted to engage the threads on the adapter to prevent the thimble from being removed from the adapter.

3. In combination Vwith a syringe barrel and a toolhaving a'recessed base and radially projecting retaining member to be applied to the barrel, an adapter for securing the ,tool to the barrel having means to engage thebarrel, a nozzle formed on the adapter to engage the recess in the base of the tool, athimble formed with an element to engage the radially project-ing retaining member on the base of the tool, threads formed on the thimble and adapter to mount the former adj ustably on the latter, an apron on the thimble at the end distant fromy the engaging element, and an inwardly extending flange on the apron to engage the threads on the adapter and limit the movement of the thimble toward the nozzle.

4. In combination with a syringe barrel and a tool having a recessed base and radially projecting retaining member to be applied to the barrel, an adapter for securing the tool to the barrel having means to engage ythe barrel, a nozzle formed on the adapter to engage the recess in the base of the tool, a thimble formed with an element to engage the radially projecting retaining member on the base of the tool, means to mount the thimble movably on the adapter, a retaining element on the thimble at the end distant from the engaging element, and an inwardly extending member on the element to engage the adapter and limit the movement of the former toward the nozzle of the adapter.

5. In` combination with a syringe barrel and a tool having a recessed base and radially projecting retaining member to be applied to vthe barrel, an adapter for securing the tool to the barrel `havii'ig means to engage the barrel, atapered nozzle formed on the adapter the clearance between the nozzle and the en-` gaging element of the thimble, and means to prevent removal of the thimble from the adapter. v

6. In" combination with a syringe barrel and a tool having a recessed base and lradially projecting retaining member to be applied i to the barreh an adapter for securing the tool to the barrel having means to engage the barrel, a tapered nozzle formed on the` adapter to engage the recess incthe base ofthe tool, a

thimble formed with an element to engage the radially projecting retaining member on the base of the tool, and means to mount the thimble movably onthe adapter with the engagj.

*ing element of the thimble overlying the tapered nozzle of the adapter, said means comprising a threaded connection between j the thimble and Vadapter whereby axial move` ment of the thimble with respect to the adapter will vary the clearance between vthe nozzle and the engaging element ofthe thimble.

7. In combination with a syringe barrel and a tool having a recessed base and radially projecting retaining member to be applied to the barrel, an adapter for securing the tool to the barrel having means to engage the barrel,

- nozzle formed on the adapter to engage the recess in the base of the tool, a thimble formedl with a gripping flange integral therewith to engage the radially projecting retaining member on the base of the tool, threads formed on the thimble and adapter to mount" the former adjustably on the latter thereby to vary the position of said element relative to said retainingmember, and means for securing the thimble permanently to the adapter;

8.111 combination with a syringe barrel and a tool having a recessed base and radially projecting retaining member to be applied to the barrel, an adapter for securing the tool to the'barrel having means to engage the barrel, a nozzle formed on the adapter to engage the recess in the base of the tool,y a thimble formed with an element to engage the radially projecting retaining member on the base of the tool7 means to mount the thimble.

"on the adapter in longitudinally adjustable relation thereto thereby to locate said element in position to engage differently spaced retaining members.

9. `In combination with a syringe barrel and a tool having a base and a radially projected-retaining member to be applied to the barrel, an adapter for securing the tool to the barrel having means to engage the barrel and means to engage the base of the tool, a thimble formed with an element to engage the radially projecting retaining member on the base of the tool to shift the saine axially,

threaded means for mounting the thimble l longitudinally movable on the adapter thereby to cause the adapter to secure inplace different tools having variably positioned retaining members.

Signed at East Rutherford in the county of Bergen and State of New Jersey this 14th day of January, A. D. 1929. i

- NICHOLAS KRUEGER. 

